Respuesta :

chetankachana

Answer:

The radius is 4.5

Step-by-step explanation:

Hello!

The circumference is calculated by the formula: 2πr

  • r = radius

We need to solve for r, given that 9π is the circumference.

Solve:

  • 9π = 2πr       =>Divide both sides by 2
  • 4.5π = πr      =>Divide both sides by π
  • 4.5 = r

The radius of the circle is 4.5 units

facundo3141592

We will see that the radius of the circle is 4.5 units.

How to get the radius of a circle?

For a circle of radius R, the circumference is given by:

C = 2*pi*R

In this case, we know that the circumference is equal to 9pi, replacing that in the above equation we get:

9pi = 2pi*R

Dividing both sides by pi gives:

9 = 2*R

9/2 = R

4.5 = R

So we can conclude that the radius of the circle is 4.5 units.

If you want to learn more about circles, you can read:

https://brainly.com/question/25306774